Here are your instructions:
Liquid propane (LP) is has 2.5 times the heat value of natural gas. There are other VERY different characteristics between natural gas and LP as well. LP is much more dangerous to work with. If not done correctly, then you might cause an explosive situation.
So since you had to ask, you're obviously not a technician experienced with gas equipment. A technician with that experience would have the knowledge, the necessary tools and the test equipment necessary for doing a proper gas conversion.
Working with a change over from Natural Gas to Propane requires Training, Knowledge, Specialized tools, Leak detection, and test instruments, certification, and a building audit. Buying the conversion kit is the easy part. It's the knowledge and experience that one needs to make a safe and reliable conversion per the manufacturers spec that is difficult.
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